Jacquard pattern-gear for embroidering-machines.



J. J. KNECHT. JAGQUAED PATTERN GEAR EoR EMBEOIDEEING MACHINES.

' APPLIGATION FILED APR.16, 1910. 1,005,436, Patented Oct.- 10, 1911.

8 SHEETS-SHEET 1.

MEW /m/ J. J. KNEGHT.

JAGQUARD PATTERN GEAR FOR EMBROIDERING MACHINES.

APPLICATION FILED APB. 16, 1910.

J. J. KNBG'HT.

'JAGQUARD PATTERN GEAR FOR BMBROIDERING MACHINES. APPLICATION FILED APB.16I 1910.

1,005,436. Patented oct. 1o, 1911.

B BEEBTS-SEBET 3.

A 111;. sf.

Zwaan for #wif/455 APPLICATION FILED APB.. 16, 1910.

Patented 01x11. 10, 1911.

8 SHEETS-SHEET Z/ZZJL es@ e@ JM 7H MM5 COLUMBIA PLANOGRAPH co.,WASHINGTON. D. C.

J. J. KNECHT.

JAGQUARD PATTERN GEAR' FOR EMBBOIDBBING MACHINES. APPLIOATION FILED111111.16, 1910.

1,005,436. Patented Oct. 10,1911.

8 SHEETS-SHEET 5.

:OLUMBIA PLANUGRAPH CO..WASH1NGTDN D c J. J. KNECHT.

JAGQUABD PATTERN GEAR POR BMBEOIDEBING MACHINES. APPLIOATIONYPILEDM1116. 1910.

1,005,436. 1 Patented 001.1111911.

8 SHEETS-SHEET 6.

k ,lne/anime ieg;

COLUMBIA PLANDDRAPM C0.,WASHINGTON. D. c.

J. J. KNEGHT. JAGQUARD PATTERN GEAR EUR EMBEOIDEEING MACHINES.

APPLICATION FILED APB.. 16, 1910. 1,005,436. Patented Oct. 10,1911.

. 8 SHEETS-SHEET 7.

- 03") c O. 58 1*/ 55@ 56C 12e COLUMBI PLANOGRAPH co..wASHiNa'r0N. D. c.

J. J. KNECHT.

JACQUARD PATTERN GEAR FOR EMBROIDERING MACHINES.

APPLICATION FILED APR-16, 1910.

l Patented 0st. 10, 1911.

8 SHEETS-SHEET 8.

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JOHANN JACOB KNECHT, OF CHEMNITZ, GERMANY.

JACQUARD PATTERN-GEAR FOR- EMBROIDERING-MACHINES.

Speccaton of Letters Patent.

Patented Oct. 10, 1911.

Application iled April 16, 1910. Serial No. 555,829.

T o all whom it may concern:

Be it known that I, JOHANN JACOB KNECHT, a. citizen of Switzerland, andresiding at Chemnitz, Germany, have invented certain new and usefulImprovements in Jacquard Pattern-Gear for Embroidering- Machines, ofwhich the following is a speciication.

The subject-matter of my invention is improved jacquard pattern-gear forembroidering-machines. he same differs from pattern-gear of this kindknown heretofore in that the motion of a main shaft is imparted bypinions arranged in pairs to the planet-wheel gear which moves theembroidery frame, the pinions of each pair being rotated in oppositedirections and, when the jacquard hooks are pushed backward and forward,caused to engage alternately with a gear wheel operatively connectedwith the planet-wheel gear.

Some illustrative embodiments of my invention are represented by way ofexample in the accompanying drawings, wherein Figures 1 to 3d show thefirst illustrative embodiment, Fig. 1 being a front elevation, Fig. 2 atop plan view, parts having been removed, and Fig. 3 a side elevation,while Fig. 3au shows a shaft and planet-wheel gearing on a larger scalepartly in elevation and partly in section, Fig. 3b shows an angle levercarrying a pair of pinions in side elevation on an enlarged scale, andFigs. 3c and 3(1 show end elevations of the latter; Figs. 4 to 5b showthe second illustrative embodiment, Fig. 4 being a front elevation, Fig.5 a side elevation, while Fig. 5aM is a horizontal section on anenlarged scale in the plane A-B in Fig. 5, and Fig. 5b is an elevationof a slide on an enlarged scale as seen in the direction of the arrow inFig. 5a; Figs. 6, 7, and 8 show the third illustrative embodiment. Fig.6 is a front elevation. Fig. 7 is a side elevat-ion. Fig. S showsdetails and Figs. 9 and 10 show the fourth illustrative embodiment infront and side elevation, respectively, whereas Figs. 11 to 13 eachshows a form of stop mechanism in elevation.

Referring to the drawings, the first illustrative embodiment shown inFigs. 1 to 3d will first be described.

1, 2 designate the two side walls of the machines, in which are journaled the main driving shaft 3 and the shafts 5, 5 driven thereby. Onthe wall 2 are rigidly secured the two bushings or hollow shafts 90, 90in which the endless screws 4 and 4, respectively, are axiallydisplaceable, but not revoluble. The threads of the screws 4, 4 engagein the threads of the nuts 91, 91 respectively which are revoluble butnot axially displaceable. On the walls 1, 2 are also secured the axles6, 6. On the shaft 3 are secured two sprocket wheels 7 and 7, of whichwheel 7 imparts the rotatory motion of shaft 3 to shaft 5 by means ofchain 8 and sprocket wheel 9, while the sprocket wheel 7 imparts therotatory motion of the shaft 3 by means of chain 3 and sprocket wheel 9to the shaft 5. The shaft 10 of the cylinder 12 carrying the jacquardcards 11 is journaled in standards 13, 14, which are each provided withtwo guide rods 15, 16 and 17, 13, respectively, which are guided inguides 19, 20 and 21, 22, respectively.

As Fig. 2 shows, the guides 19, 21 are secured to the side walls 1 and2, respectively, and the guides 20, 22 are respectively rigidlyconnected with the same walls. To the guide rod 17 is pivoted at 23 therod 24 which carries at its end the roller 25. On the shaft 5 is securedthe cam disk 26 which coacts with the roller 25 and moves the rod 24 inthe direction of arrow 27. A spring 29 is secured by one end at 28 tothe rod 24 and by its other end to the wall 2. This spring tends to movethe rod 24 with the shaft 10 and cylinder 12 in a direction opposite tothe arrow 27 (F ig. 2). On shaft 10 is secured the ratchet wheel 30which participates in the reciprocatin motion of shaft 10 and cylinder12. n wall 2 is mounted the pawl 31 which holds the ratchet wheel 30 assoon as shaft 10 and cylinder 12 occupy the position in which they are'shown in Fig. 2. On wall 2 is also secured a pivot 32, on which isfulcrumed the twoarmed lever 33, 34. Arm 33 carries' a roller 35, withwhich a cam 36 secured on shaft 5 coacts. Vhen the arm 33 rocks upward,the tension of the spring 37, which is attached at one end to the arm 33and at the other end to the wall 2, must be overcome. The arm 34 carriesat one end the pawl 38 which, when the lever rocks, rotates the ratchetwheel 30 one tooth together with shaft 10 and cylinder 12 at the momentwhen the cylinder has been removed from the hooks.

Gear wheels 8O are secured on the shaft 5. At each side of these wheelsare journaled two angle levers l81, 82 (Figs. 3b and 3C), which carryontheir pivots 83, 84 the above mentioned pinions or spur wheels 85, S6arranged in pairs. On the axle 6 are journaled gear wheels 87 (Figs. 1and 2). W'hen the angle-levers 81, 82 (Fig. 3b) are rotated clockwise,wheel 85 is removed from wheel 87 and wheel 86 approaches t-he same.This wheel S7 comprises two parallel sets of teeth, 86, 89 (Fig. 3d)which however do not extend over the entire periphery, but only overapproximately one third thereof, and are separated from one another by anon-serrated part. is provided with a complete circle of teeth on onlyhalf the breadth of its periphery, namely where it engages with thewheel S6. On the other half of its periphery the toothed rim extends at106 over only approximately one third of the periphery. The consequenceis that when the wheel 85 meshes with the teeth 89 of wheel 87, which isthe case, for example, in the position according to Fig. 3b, the wheel85 can transmit motion to the wheel 87 only when the rim of teeth ofwheel 85 extending over the entire breadth thereof admits of this. Inlike manner, the wheel 86 `has a complete rim of teeth on the one halfof its breadth which guarantees continuous engagement with the wheels S0and 85, but on the other half of its breadth, at 107, it has a rim ofteeth extending only approximately over one third the periphery.Consequently, when the angle levers 81, 82 rotate clock wise and thewheel 86 meshes with the rim of teeth 8S of the wheel. 87, the motion ofthe wheel 86 is impartedto the wheel 87 only to suoli an extent as isadmitted by the rim of teeth of the wheel 86 extending over its entirebreadth and meshing with the rim of teeth 66 of the wheel 87.Consequently, owing to the angle levers 61, 82 arriving either into theposition according to Fig. 3" or into that position, in which not thewheel 85, but the wheel S6 is in mesh with the corresponding rim ofteeth of the wheel 87 rotatory motion is imparted sometimes in onedirection and sometimes in the opposite direction to the wheel 87 on theshaft 6. Each wheel 87 is rigidly connected with a crank 39 whose pin 40moves in a slotted extension 41 of a planet-wheel carrier 42 journaledfree to rotate on the hollow shaft 90. The pin 40 slides in the slot 41by means of a block 43 which is under the action of the spring 44.

In the two walls of the machine is secured, in addition, an axle 51, onwhich the riders 52 are mounted to rock. Each rider is pivotallyconnected at its one end 53 with a limb or link 54. Each link ispivotally connected at 55 with the rod 57 pivoted to the appertaininghook 56. The one arm of the lever 82 is pivotally connected by the rod58 The wheel 85 (Figfc) j with the one arm of the rider 52. rIhe other jend of each rider is pivotally connected at 59 with a limb or link 60.Each link 60 is pivotally connected at 62 with a rod 63 which is pivotcdto a link 54. The wheel 85 carries a pin 64 which can hit against thelink 60, and the wheel 66 carries a pin 65 for coacting with a link 54.Each hook 56 is pivotally connected at 66 and 67 with two arms 66, 69which are fulcrnmed at 70 and 71, i'espectively, on the frame of themachine. Willen the hooks are moved horizontally by the jacquard cardinto the forward position occupied by hook 56 shown in Fig. 2, the arm69 is rocked into the position occupied by arm 69 and the link 68 in theposition occupied by link 68. In this manner the hooks are guidedhorizontally.

To each of the standards 13, 14 is pivoted at 100 a rod 101. The tworods 101 are each pivotally connected at 104 with a lever 103 fulcruinedat 102. The two levers 103 are connected by a straight edge or blade 105with which they return the hooks moved by the jacquard caid into theiroriginal position as soon as the cylinder 12 is removed from the hooks.

On the hollow shafts 90, 90 are journaled tively, formed as disks. Theyform parts of gearing for moving the embroidery frame. Such a gearing isrepresented in Fig. The bushing or hollow shaft 90 is integral with therim of teeth 97 and carries wheels 47 which are revoluble but notaxially displaceable thereon. These wheels 47 are shaped similarly tothe wheel 91, but they have no screw thread in the hub. In eachplanet-wheel carrier 42 are jouinaled parallel to the worin 4 two shortaxles 92, 98 which each carries at one end a toothed planet-wheel 45 and46, respectively, and at the other end a toothed planetewheel 94 and 95,respectively. The wheels 94, 95 located to the extreme right-hand inFig. 3a mesh with the fixed toothed rim 97 rFlie wheels 45, 46 on thesame shafts mesh with the inwardly-directed toothing of the adjacentwheel 47. Each of the wheels 47 is provided on its hub with a rim ofteeth 96 like the rim 97 (see Fig. 3* left-hand) which meshes with thewheels 94, 95, of the lefthand adjacent plaiiet-wheel carrier. rI`hewheels 47 and also of wheel 91, has twice as many teeth as the rim ofteeth 96 which has the same diameter and the same number of teeth as thestationary wheel 97. The parts of the gearing mounted around the hollowshaft 90 are arranged in an exactly similar manner as the parts of thegearing around the hollow shaft 90.

In consequence of their pla-net wheels 45, 46, the planet-wheel carriers42 coactin such manner with the wheels 47 arranged beside theplanet-wheel carriers 42 and 42', respecinwardly-directed toothing ofeach of these them free to rotate around the shaft 90 that the endlessscrew 4 is axially displaced, when the planetwheel carriers are eachrotated the same angle in order commencing at the right in Fig. 3a, theamounts of such displacement being as the members of a geometricalseries, 2'. e. as 1:2:4z8116z32z64: 12S. For example, according as oneor more of the wheels 87 are rotated, the individual amounts ofdisplacement of the endless screw 4 caused by the rotation of the wheelsS7 are added to or subtracted from one another'. By rotating the wheelsS7 in the one or other direction the endless screw 4 can consequently bemoved axially optionally within definite limits. The same holds good forthe endless screw 4 which is driven in an exactly analogous manner asthe endless screw 4. For this reason in Fig. 1 the correspond-V ingreference characters are provided with the index To the endless screwsor worms 4 and 4 are secured the two slides 48, 48 which coact with thepivot of the embroidery frame 50, as shown in Fig. 3.

The above described form of my apparatus operates follows r-As soon asthe jacquard card strikes against the needles 74 of the hooks 56, someof the hooks enter with the needles into the holes in the jacquard cardand consequently remain in their previous position. On the contrary,those hooks against whose needles a non-perforated part of the cardstrikes are displaced by the card into the position occupied by hook 56shown in F ig. 2. Those hooks which are pushed forward by the jacquardcard place the limbs or links 54 over the pins 65 of the wheels 86 andthe links 54 over the pins 65 of the wheel 86. WThen these hooks arereturned into their normal position by the blade 105 the limbs or links60 arrive over the pins 64 of the wheels 85 and the links 60 over thepins 64 of the wheels S5. This position of the links 54, 60 is shown atthe top of Fig. 1, in which the pin 64 forces the link 6() upward duringthe rotation imparted to the wheel S5 by the main shaft 8 by means ofthe wheels SO and 86. Consequently the wheel S5 becomes disengaged fromthe wheel S7, while the wheel S6 is caused to mesh with the wheel 87. Atthis moment the lifting cam 26 (Fig. 2) is in a position whichcorresponds to the greatest distance of the cylinder 12 from the hooks.The wheel 87 will now rotate in the direction of its arrow shown in Fig.1, so that the planet-wheel carrier 42 is rotated into the posit-ionshown in dotted lines. The crank 39 and also the wheel 87 are held inthis position by the coil spring 44 and prevented from being rotatedunintentionally until the same hook is pushed forward by anon-perforated portion of the card. lil/hen the link 60 rises the link54 falls, but its lower end does not arrive in the track of the pivot 65because the hook 56 is in its eXtreme right-hand position. Now if a hookis pushed forward during the motion of the cylinder 12 to the left, theparts arrive into the position shown at the bottom of Fig. 1. The link54 has been brought by means of the rod 57 over the pin 65 whichconsequently forces the link 54 upward, whereby the rider 52 is rotatedcounter-clockwise. Consequently the wheel S6 is disengaged from thewheel 87, whereas the wheel 85 is caused to mesh with the wheel 87. Atthis moment the lifting cam 26 (Fig. 2) is in that position whichcorresponds to the least distance of the cylinder 12 from the hooks. Aswill readily be understood, the wheel 87 rotates in the direction of itsarrow, so that the planet-wheel carrier 42 is rotated into the positionshown in dotted lines. The crank 39 remains in this position until thesame hook has been pushed back by the straight edge 105 and the link 60is brought over the pin 64. The hooks are held in their end positions bythe stop pins 7 3. Each of the latter is raised and lowered by a lever75, 76 fulcrumed. at 79 and actuated by the cam 77, and then lies in oneof the incisions 72 or 7 8 in the hooks. In the second illustrativeembodiment shown in Figs. 4 to 5l each of the hooks 56L is connected bya rod 572l with the one link or limb 54a of a rider 52a fulcrumed at51a. The other link or limb 60@L of this rider is connected by a guiderod 63 with the limb 54a. Below the limbs 54a and 60a are arranged twopins or stops 64a and 65a which are alternately raised and lowered by aneccentric not shown. The one stop 64"L moves from its upper positioninto the position 64a shown in dotted lines, and the stop 65a from thebottom position into the upper position 65a shown in dotted lines. Bymeans of its slot 11a the rider 52at clasps the pin 50Z1 of the anglelever 13a, 14ZL fulcrumed at 12a. By means of its slot 15a the arm 14aclasps the pin 16L of the slide 17 a which is mounted displaceable onthe shafts 83a, 84a and is provided with two wedge-like blocks 18a, 19a.(Figs. 5, 5a and 5b.) The shafts 83a, 842L are journaled in the sidewalls of the machine. On shaft 83;L is secured the gear wheel 2a and onshaft 841 the gear wheel 33a and the sprocket wheel 34. This sprocketwheel is driven by means of the chain 8a b the sprocket wheel 7a securedon shaft 3a.

The gear wheel 33a meshes with the gear the shaft 83a. The wheel 85a isdisconnected from the shaft 83a as soon as a pin 24a loose in the wheel85 slides on the wedge-shaped block 1S of the slide 17L during therotation of the wheel 85a, whereby the same is moved with the clutch21EL against the tension of the spring 23a, z'. e. in the direction ofthe arrow 25a. rlhe wheel 85a has teeth on only about one third of itsperiphery The gear wheel 86a on the shaft 84a is connected with anddisconnected from the same in a similar manner as the gear wheel 85a,for which purpose the slide is provided with the wedge-shaped block 19aand the pin 26a is loose in the wheel SGE. lWhen the wedgeslike block ofthe slide 17a is in the position shown in Fig. 5, the wheel 86a isconnected with the shaft 84a, whereas the wheel 85a is disconnected fromits shaft. But as soon as the wheel SG carrying the pin 26a passes theblock 19a of the slide, the pin 2G2L is moved toward the clutch 27a,whereby this is disengaged from the wheel 86a against the action of thespring 28a. rlhe wheel 862L likewise has teeth only over approximatelyone third of its periphery. The toothing of the wheels 85l and 8G Yarein such relative positions that both the wheels can mesh simultaneouslywith the gear wheel 87a. The axle (ia is also secured in the side wallsof the machine. The gear wheels 87 are journaled on the same, in theillustrative embodiment according to Figs. 1 to 3b. Each of the toothedrims of a pair of wheels 85a, Strl can engage with one of these gearwheels. Each of the wheels 87 is rigidly connected with a crank 39a.rlhe pin 40 of the crank carries block, which may be under the action ofa spring, sliding in a slot of the crank 41a, as in the firstillustrative embodiment. rllhe crank 41EL is connected with theplanet-wheel carrier 42a. As in the rst illustrative embodiment, herealso the planet-wheel carriers are arranged on the bushing or hollowshaft 90a which is rigidly connected with the machine frame and in whichthe worm or endless screw 4a is axially movable but not rotatable. risin the first illustrative embodiment, the planet-wheel carriers 42al actby means of their planet wheels on the wheels beside them in such mannerthat the endless screw 4a is axially displaced; when each one of theplanet-wheel carriers rotates and supposing this rotation takes place inorder from one end of the worm to the other, the mounts of thedisplacement are as the members of a geometrical series. Now accordingas the hook is pushed forward by the non-perforated partof the acquardcard or remains in its normal position, the limb 54a or 60a' is broughtover the stop G5 or G4, respectively. ln the illustrative embodimentshown in Fig. 4 the advanced hook has moved the limb 542L over the stop65a. Consequently, this limb is lifted by the upwardly moving stop andthe rider 52a is rocked counterclockwise. ln this manner a clockwiseoscillation is imparted to the lever 13a, 14a. Con* sequently, the slide17ZL is moved to the left into the position shown in Fig. 5a. ln thisposition of the slide the pin 24a loose in the wheel 85aN slides againstthe wedge-shaped block 181L and is moved in the direction of thearrow25a, whereby the wheel 85at is disconnected from the shaft 83a. Thepreviously disconnected wheel StrL is coupled with the shaft 84a inconsequence of the slide moving, so that the rotation of the shaft 3 andof the sprocket wheel 7a is transmitted by means of the gear wheel 34a,to the gear wheel 87a and to the planet-wheel carrier 42a, the crank 41amoving out of its position shown in dotted lines into that shown by fulllines. The crank remains in this position until the advanced hook 56 hasbeen pushed back by the straight edge not represented in Fig. 4, thelimb (SOa being placed over the stop 64a. As soon as this stop rises,the rider 52a together with the angle lever 13a, 14@L is rocked backinto the position shown in Fig. 4, so that the slide 17a likewisearrives into the righthand position illustrated in Fig. 4, when the pin26a runs onto the wedge-shaped block 19a and disconnects the wheel 86afrom the shaft 84a. The pin 24 simultaneously slides off thewedge-shaped block 18a causing the wheel 85a to be coupled with theshaft 83a. rlhe wheel 87a is then rotated in a direction opposite to itsarrow, so that the crank 41L and the planetwheel carrier 42 arrive intothe position shown in dotted lines.

rlhe illustrative embodiment according to Figs. 6 to al differs fromthat according to Figs. 1 to 3b principally in that the continuously-driven wheels 85h, SG1 are not alternately connected with anddisconnected from the wheel S7" by the oscillatory motion of the anglelevers 81h, 82", but by the axial movement of these angle levers. Tothis end, the angle levers Slb, 82h are not mounted to rock on the shaft51h, but are axially movable thereon. The two shafts 83h, 84", which arejournaled in the side walls of the machine frame, extend through thelimbs of the angle levers 8l", 82h, and when the angle levers are movedaxially along the shaft 51h, the two limbs slide along the shafts 83h,84". The gear wheels 85, 86h, which are also axially displaceable on theshafts 83h, 84h, respectively, are held by the limbs of the angle leversSlb, 82h (Fig. 7) so that they must participate in the axialdisplacement of the angle levers 81h, 821. These levers are displacedaxially in the one or other direction at the moment when the limb GOb orthe limb 54b of the rider 52h is raised. For this purpose, the rider 52"which is mounted displaceable between the angle levers 81", 82h isrigidly connected with a segment of a cylinder 101. The latter has aslanting slot 111 (Fig. 8) in which slides a roller 121. This roller isjournaled on a pivot mounted vertically on the machine frame (Figs. 6and 8). 881 designates the driving shaft, on which the wheel 85b isaxially displaceable but driven by the shaft when it is rotated. Thespring of the shaft 831 and the groove in the head of the shaft 851 arenot to be found inthe drawings. This wheel can be journaled in thismanner by providing the shaft 881 with a spring which projects into acorresponding groove in the hub of the wheel 851. The shaft 611 issecured in the side walls of the machine. As in the Jdrst illustrativeembodiment, the wheels 871 are journaled on this shaft and are formedsimilarly as in that embodiment, z'. e. each possesses two parallel rimsof teeth 881, 891), which, however, do not extend over the entireperiphery, but only over about one third thereof. The Wheel 851 has thesame toothing as the wheel 85 and the wheel 861 the same toothing as thewheel 86 in the first illustrative embodiment according to Figs. 1 to31.

The illustrative embodiment described with reference to Figs. 6 to 8operates as follows Those hooks which, when the jacquard card hitsagainst the needles of the hooks, are not advanced, but remain in theposition into which they are pushed back by the straight edge, haveplaced a limb 60b of a rider 52b over a pin 641. Consequently, thepin641J of the wheel 85, which is rotated by the main shaft 831 andconstantly imparts its motion to the wheel 861, strikes against the limb60, whereby a clockwise oscillatory motion is imparted to the rider 521.As the segment 10b rigidly connected with the rider 521 is displaced bymeans of the slot 111 and the roller 12, the rider 521J with the twoangle levers 811, 821 and the wheels 851, 86b are displaced axially inthe direction of the arrow 911. Therefore the wheel 851, which, as Fig.7 shows, is disengaged from the rim of teeth 881, is caused to mesh withthe same. Consequently, the motion of the driving shaft 881 is imparted,by means of the wheel 851, to the wheel 87b and by this by means of thecrank 891 to the planet-wheel carrier 421 formed as a radially-slotteddisk and to the hollow shaft 901 of the endless screw 41). W'hen thehook 561D is advanced by the acquard card, the limb 541 arrives over thepin Consequently, the rider 521 is rotated counter-clockwise into theposition shown in Fig. 6. 1n consequence of this motion the rider 52with the two angle levers 811, 82b and the wheels 851, 861 are displacedaxially ina direction opposite to the arrow 911. The wheel 851 isdisengaged from the rim of teeth 881 and the wheel 861 is connected withthe rim of teeth 891). Consequently, the rotation of shaft 881 and wheel851 is imparted by means of the wheel 86 to the wheel 87, so that thewheel 871 now rotates in the opposite direction.

The fourth illustrative' embodiment according to Figs. 9 and 10 diifersfrom thosealready described, on the one hand, in' thatfor eachreciprocating displacement of the embroidery frame, not one, but alwaystwo hooks are employed, and, also, in that the two gear wheels of onepair of angle levers arrive after each rotation into' a middle position,in which they are both disconnected from that gear wheel which impartsthe' motion to the planet-wheel carrier journaled free to rotate onthe.endles's screw. In this illustrative embodiment, 8 designates thedriving shaft carrying the sprocket wheel 7 which drives, by means ofythe chain 8, the sprocket wheel 9 on the shaft 5 which is journaled inthe side walls of the machine. In the walls of the machine is alsosecured the axle 51, on which riders'52. are mounted to rock. Each rideris pivotally connected at its ends with the limbs 60, 54. To the limb 60is pivoted the rod 66 which runs out at its other end into a fork 30,with which it clasps the pin 81 on the' limb 54. For operating the gearwheels 85 and 86 hooks 55 and 56, respectively, are provided. The rod58, which is pivotally connected with the extension of the limb 60 ispivoted to the hook 55. The hook 56 is pivotally connected with the rod59 which is pivoted to the limb 54. On the shaft 5 is secured the wheel80, on the two sides of which the angle levers 81, 82 are mounted freeto rock on the shaft. The angle lever 82 is pivotally connected by a rod99 with the rider 52. The gear wheels 85, 86 are journaled in the limbsof the angle levers 81, 82. The wheel 80 is constantly in engagementwith the wheel 86 and this is constantly in engagement with the wheel85. The wheels 85 and 86 are similar to the wheels 85 and 86 in theillustrative embodiment according to Figs. 1 to 3. In the walls of themachine frame is secured the shaft 6, on which the wheel 87 is journaledwhich is formed as an ordinary spur wheel and connected rigidly with thethree-armed crank 89. On each arm of the crank is secured a pin 41. Onthe bushing or hollow shaft 90, which is secured in the machine frameand corresponds to the hollow shaft 90 in the illustrative embodimentaccording to Figs. 1 to 3, is journaled the planet-wheel carrier 42formed as a radiallyslotted disk. rlhis planet-wheel carrier has sixslots 43 arranged in such manner that when the wheel 87 rotates, or whenthe crank 39 is rotated 1200 thereby, one of the crank-pins enters intoone of the slots 43, reciprocates once in the same and finally leavesit, the planet-wheel carrier 42 being rotated one sixth of a revolution.The 130 planet-wheel carrier is stopped by the threearmed crank; namely,when the shaft 6 rotates, the crank has one arm moving in a slotin theplanet-wheel carrier 42 and feeds the latter, whereas at the end of thefeeding motion two crank-pins hold the planetwheel carrier. For stoppingthe planetwheel carrier l provide, in addition, a hexagon 36, againstone side of which a head 37 is pressed by means of a spring 38. Thecurved members 34, 35 are rigidly connected with the machine frame. rlhepins 64 and 65 are rigidly connected with the wheels 85 and 86,respectively, and are in such a position on their wheels that, when thewheels rotate in the direction of their arrows, the pins coact with thecurved members and disconnect said wheels from the wheel 87.

This illustrative embodiment shown in Figs. 9 and 1() operates asfollows ilhen one of the two hooks, e. g. 55, is advanced by thejacquard card, as Fig. 9 clearly shows, the limb 60 is placed over thepin 64 of the wheel 85. Consequently, this limb is raised by the pin 64,whereby the rider 52 and the angle levers 81, 82 are rocked clockwise.This motion of the angle levers 81, 82 causes the wheel 86 to engagewith the wheel 87, and consequently the rotary motion imparted by themain shaft 3 by means of the sprocket .wheels 7, 9, shaft 5 and wheel 80is transmitted to the wheel 87. The latter imparts the same to theplanetwheel carrier 42. As soon as the wheel 86 has rotated a definitedistance, the pin 65 of the same coacts with the curved member 35causing the Wheel 86 to be disengaged from the wheel 87 and accordinglythe wheels 85, 86 arrive into their previous middle position, in whichthey are disconnected from the wheel 87. When the wheel 87 and,accordingly, the planet-wheel carrier 42.are to be rotated back, thehook 56 must be advanced by the jacquard card. In this event, the limb54 then arrives over the pin 65. When the wheel 86 rotates the pin 65will lift the limb 54, so that the rider 52 and the `angle levers 81, 82are rotated counterclockwise. The wheel 85 is hereby connected with thewheel 87. As soon as the .wheel 85 has rotated a denite distance, thepin 64 hits against the curved member 34 whereby the wheel 85 isdisconnected from the wheel 87 and arrives with the wheel 86 into themiddle position. 'When both the hooks 55 and 56 remain in their normalposition, which e. g. will be the case when holes are provided in thejacquard card for the two hooks of one element, the two hooks are notadvanced but remain in their normal position into which they arereturned by the straight edge 46, their needles entering into theperforations in the jacquard card. 1t is clear that the wheels 85, 86then remain in the middle position, in which they are both out ofengagement with the wheel 87. For the event of a hole of the jacquardcard 11 not being located exactly in front of the appertaining needle,the two limbs are prevented from being operated simultaneously by thepin 31 on the limb 54 being clasped by the fork 30 of the rod 66. 1t isobvious that, when the limb 60 is placed by the hook 55 over the pin 64,the limb 54 is prevented from being placed over the pin 65 by the forkclasping the pin 31, and, reversely, when the limb 54 is placed over thepin 65, the limb 60 is likewise prevented from being placed over the pin64 by the fork.

'lhe stop mechanism illustrated in Fig. 11 comprises a slide 20 which isguided by the bars 21, 22 by means of the slots 23 and 24, respectively.In the machine frame is journaled the shaft 25 on which is secured thecam 26l The transmission of motion to the shaft 25 is such that thisshaft rotates one complete revolution during each sixth of a revolutionof the planet-wheel carrier 42. 1n one arm of the slide 20 is ournaledthe roller 27 with which the cam 26 coacts. To the machine frame isattached the one end of the spring 28 whose other end is attached to theslide 20 which runs out below into a fork 29. 1n the side walls of themachine frame is secured the shaft 6, on which the wheel 87 is mountedfree to rotate. With the wheel 87 is rigidly connected the three-armedcrank 39 carrying the pins 41 which, as in the illustrative embodimentlast described, alternately enter into and leave the radial slots 43 ofthe disk 42. During each revolution of the shaft 25 t-he slide 20 isfirst raised by the cam 26 and then liberated by the same, whereupon itis moved downwardly under the action. of the spring 28 and clasps withits forked end the pin 41 of the crank 39 thereby arresting the crank.

The stop mechanism according to Fig. 12 comprises an arm 2Og fulcrumedat 21g and is pressed by spring 28g against the threearmed crank 39gjournaled on the shaft 6g.

1n the stop mechanism of the crank according to Fig. 13 a triangle 40his rigidly connected with the crank 39. In the machine frame isjournaled axially displaceable in the abutment 49h a pin 23h which runsout above into a disk 41h. Against this disk there acts the one end ofthe spring 28h which abuts with its other end against the abutment 49hand presses the disk 41h against one side of the triangle.

I claim 1. 1n jacquard pattern-gear for embroidering-machines, thecombination, with planetwheel gearing comprising planet-wheel carriersfor operating the embroidery frame, a main shaft, a plurality of hooks,and jacquard mechanism driven by the main shaft for reciprocating thehooks, of a plurality of pairs of pinions, means driven by the mainshaft for driving the pairs of pinions, the pinions of each pair beinggeared to rotate in opposite directions, a gear Wheel arranged adjacenteach pair of pinions and operatively connected with a planet-Wheelcarrier, and mechanism operatively connecting each pair of pinions withone of said hooks for bringing each pinion of a pair of pinionsalternately into engagement with the gearb Wheel adjacent thereto when ahook is reciprocated.

2. In jacquard pattern-gear for embroidering-machines, the combination,With planet- Wheel gearing comprising planet-Wheel carriers foroperating the embroidery frame, a main shaft, a plurality of hooks, andjacquard mechanism driven by the main shaft for reciprocating the hooks,of a second shaft driven by the main shaft, a plurality of pairs ofangle levers free to rock on t-he latter shaft, a pair of pinionsjournaled in the limbs of each pair of angle levers and geared to rotatein opposite directions, each pinion having a portion of the peripherythereof free from teeth, means on the second shaft operatively connectedwith one of said pinions, a gear Wheel arranged adjacent each pair ofpinions and operatively connected with a planet-Wheel carrier, andmechanism actuated by said hooks for bringing each pinion of a pair ofpinions alternately into engagement with the gear Wheel adjacentthereto.

3. In jacquard pattern-gear for embroidering-machines, the combinat-ion,with planet- Wheel gearing, comprising planet-Wheel carriers foroperating the embroidery frame, a main shaft, a plurality of hooks, andjacquard mechanism driven by the main shaft for reciprocating` thehooks, of a second shaft driven b y the main shaft, a plurality of pairsof angle. levers free to rock on the latter shaft, a pair of pinionsjournaled in the limbs of each pair of angle levers and continuously inmesh one with the other, each pinion having a portion of the peripherythereof free from teeth, a Wheel fixed on the second shaft between eachpair of angle levers geard with one of said pinions, a gear Wheelarranged adjacent each pair of pinions and operatively connected With aplanet-Wheel carrier, and mechanism actuated by said hooks for bringingeach pinion of a pair of pinions alternately into engagement with thegear Wheel adjacent thereto.

4. In jacquard pattern-gear for embroidering-machines, the combination,With planet-Wheel gearing comprising planet- Wheel carriers foroperating the embroidery frame, a main shaft, a plurality of hooks, andjacquard mechanism driven by the main shaft for reciprocating the hooks,of a second shaft, driven by the main shaft, a plurality of pairs ofangle levers free to rock on the second shaft, a pair of pinionsjournaled in the limbs of each pair of angle levers and geared to rotatein opposite directions, each pinion having a portion of the peripherythereof free from teeth, means on the second shaft operatively connectedwith one of said pinions, a gear' Wheel having a portion of theperiphery thereof free from teeth, arranged adjacent each pair ofpinions and operatively connected with a planet-Wheel carrier, andmechanism actuated by said hooks for bringing each pinion of a pair ofpinions alternately into engagement with the gear Wheel adjacentthereto.

5. In jacquard pattern-gear for embroidering-machines, the combination,With planet- Wheel gearing comprising planet- Wheel carriers foroperating the embroidery frame, a main shaft, a plurality of hooks, andjacquard mechanism driven by the main shaft for reciprocating the hooks,of a second shaft driven by the main shaft, a plurality of pairs ofangle levers free to rock on the second shaft, a pair of pinionsjournaled in the limbs of each pair of angle levers and continuously inmesh one With the other, each pinion having a portion of the peripherythereof free from teeth, a Wheel fixed on the second shaft between eachpair of angle levers geared With one of said pinions, a gear Wheelhaving a portion of the periphery thereof free from teeth, arrangedadjacent each pair of pinions and operatively connected With aplanet-Wheel carrier, and mechanism actuated by said hooks for bringingeach pinion of a pair of pinions alternately into engagement With thegear Wheel adjacent thereto.

6. In jacquard pattern-gear for embroidering-machines the combination,with planet-Wheel gearing comprising planet- Wheel carriers foroperating the embroidery frame, a main shaft, a plurality of hooks, andacquard mechanism driven by the main shaft for reciprocating the hooks,of a second shaft driven by the main shaft, a plurality of pairs ofangle levers free to rocl on the second shaft, a pair of pinionsjournaled in the limbs of each pair of angle levers and geared to rotatein opposite directions, each pinion having a portion of the peripherythereof free from teeth, means on the second shaft operatively connectedwith one of said pinions, a gear Wheel having tWo sets of teeth eachextending only over a portion of the periphery thereof, arrangedadjacent each pair of pinions and operatively connected with aplanet-Wheel carrier, and mechanism actuated by said hooks for bringingeach pinion of a pair of pinions alternately into engagement With thegear Wheel adjacent thereto.

7. In jacquard pattern-gear for embroidering-machines, the combination,with planet- Wheel gearing comprising planet-Wheel carriers foroperating the embroidery frame, a main shaft, a plurality of hooks, andjacquard mechanism driven by the main shaft for reciprocating the hooks,of a second shaft driven by the main shaft, a plurality of pairs ofangle len vers free to rock on the second shaft, a pair of pinionsournaled in the limbs of each pair of angle levers and geared to rotatein opposite directions, each pinion having a portion of the peripherythereof free from teeth, means on the second shaft operatively connectedwith one of said pinions, a gear Wheel having two separate parallel setsof teeth each extending only over a portion of the periphery thereof,arranged adjacent each pair of pinions and opera tively connected with aplanet-Wheel carrier, and mechanism actuated by said hooks for bringingeach pinion of a pair of pinions alternately into engagement with thegear Wheel adjacent thereto.

S. ln jacquard pattern-gear for embroidering-machines, the combination,With planet- Wheel gearing comprising planet-Wheel carriers foroperating the embroidery frame, a main shaft, a plurality of hooks, andjacquard mechanism driven by the main shaft for reciprocating the hooks,of a plurality of pairs of pinions, means driven by the main shaft 'fordriving the pairs of pinions, the pinions of each pair being geared. torotate in opposite directions, a gear Wheel arranged adjacent each pairof pinions and operatively connected With a planet-Wheel carrier, eachpinion carrying a pin, and mechanism actuated by said hoolrs forcoacting with the pins for bringing each pinion of a pair of pinionsalternately into engagement with the gear ivheel adjacent thereto.

9. In jacquard pattern-gear for embroidering-machines, the combination,with planet- Wheell gearing comprising planet-Wheel carriers foroperating the embroidery frame, a main shaft, a plurality of hooks andjacquard mechanism driven by the main shaft for reciprocating the hooks,of a plurality of pairs of pinions, means driven by the main shaft fordriving the pairs of pinions, the pinions of each pair being geared torotate in opposite directions, a gear wheel arranged adjacent each pairof pinions and operatively connected with a planet-Wheel carrier, eachpinion carrying a pin, and

mechanism actuated by said hooks for coacting with. the pins forbringing each pinion of a pair of pinions alternately into engagementwith the gear wheel adjacent thereto, and means for preventing the twopins of one pair of pinions enacting simultaneously with said mechanism.

10. ln jacquard patterirgear for embroiderin g-m achines, thecombination, with planetvvheel gearing. comprising planet-Wheel carriersfor operating the embroidery frame, a main shaft, a plurality of hooks,and jacquard mechanism driven by the main shaft for reciprocating thehooks, of a plurality of pairs of pinions, means driven by the mainshaft for driving the pairs of pinions, the pinionsof leach pair beinggeared to rotate in opposite directions, each planet-Wheel carrierhaving a longitudinally slotted arm, a gear vvheel arranged ad jacenteach pair of pinions, a crank, having a pin, attached to each gear Wheelcoacting with a slotted arm, and mechanism actuated by said hooks forbringing each pinion of a pair of pinions alternately into engagementwith the gear Wheel adjacent thereto.

ll. ln acquard pattern-gear for embroid ering-mach ines, thecombination, with planet- Wheel gearing comprising planet-Wheel carriersfor operating the embroidery frame, a main shaft, a plurality of hooks,and jacquard mechanism driven by the main shaft for reciprocating thehooks, 0f a second shaft driven by the main shaft, a plurality of pairsof angle levers free to rock on the second shaft, a pair of pinionsjournaled in the limbs of each pair of angle levers and geared to rotatein opposite directions, each pinion having a portion of the peripherythereof free from teeth, means on the second shaft operatively connectedwith one of said pinions, each planet-Wheel carrier having alongitudinally slotted arm, a. gear wheel arranged adjacent each pair ofpinions, a crank, having a pin, attached to each gear wheel coactingwith a slotted arm, and mechanism actuated by said hooks for bringingeach pinion of a pair of pinions alternately into engagement with thegear Wheel adjacent thereto.

ln testimony whereof, affix my signature in the presence of tivoWitnesses.

JUHANN JACOB KNECHT. l/Vitnesses lNiLLiAM J. KoNJnrsiNe, MAX J.BENNDORF.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latents, Washington, I0. C.

